/*
 * Copyright 2022 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.datastore.preferences.core

import androidx.datastore.core.okio.OkioSerializer
import okio.BufferedSink
import okio.BufferedSource

/**
 * Proto based serializer for Preferences. Can be used to manually create
 * [DataStore][androidx.datastore.core.DataStore] using the
 * [DataStoreFactory#create][androidx.datastore.core.DataStoreFactory.create] function.
 */
expect object PreferencesSerializer : OkioSerializer<Preferences> {
    override val defaultValue: Preferences

    override suspend fun readFrom(source: BufferedSource): Preferences

    override suspend fun writeTo(t: Preferences, sink: BufferedSink)
}
